{"refrec":{"BRefID":118540,"RR":"<b>Plotkin, A.S.; Janussen, D.</b> (2007). New genus and species of Polymastiidae (Demospongiae: Hadromerida) from the Antarctic deep sea. <i>J. Mar. Biol. Ass. U.K. 87(6)</i>: 1395-1401. <a href=\"https://dx.doi.org/10.1017/S0025315407058134\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315407058134</a>","BEntID":112792,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Biol. Ass. U.K. 87(6)</i>: 1395-1401. <a href=\"https://dx.doi.org/10.1017/S0025315407058134\" target=\"_blank\">https://dx.doi.org/10.1017/S0025315407058134</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Plotkin, A.S.; Janussen, D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Plotkin, A.S.; Janussen, D.","Englishabstract":"A new sponge genus and species, <i>Astrotylus astrotylus</i>, is described from the Antarctic abyssal zone. Its peculiar microscleres, herein referred to as astrotylostyles, combine the features of asterose spicules and tylostyles. Similar spicules are observed in <i>Hymeraphia</i> and <i>Discorhabdella</i> (order Poecilosclerida). But this similarity is convergent as far as a radial choanosomal skeleton composed by principal tylostyles and a cortical palisade of small tylostyles in <i>Astrotylus</i> undoubtedly confirm its allocation to the order Hadromerida and most likely to the family Polymastiidae. <i>Atergia, Acanthopolymastia</i> and <i>Tylexocladus</i> have the closest affinities with <i>Astrotylus</i> that calls for the phylogenetic analysis of their relations. Meanwhile astrotylostyles of <i>Astrotylus</i>, cladotylostyles of <i>Tylexocladus</i> and grapnel-like exotyles of <i>Proteleia</i> may be the remnants of non-monaxonic ancestral spicule type in Polymastiidae that calls for reconsideration of the relations between hadromerid families.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"New genus and species of Polymastiidae (Demospongiae: Hadromerida) from the Antarctic deep sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-07 01:31:07.803325","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2020-10-26","DateCreate":"2008-01-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000252475100007","VABBcode":null,"OpenAcc":0,"DOI":"10.1017/S0025315407058134"},"refs":null,"anarec":{"AnaID":118540,"PubliDate":2007,"Pagination":"1395-1401","XtraPublOfAnaID":null,"ISBN":null,"Volume":"87","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43277,"SerRR":"Journal of the Marine Biological Association of the United Kingdom. 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